Magneto



Sept. 28 1926.

A. c. KLECKNER MAGNETO Filed MarChflO, 1924 bearing 11. Rotatably mounted in the bear- Patented Sept. 28, 1926.

i UNITED l STATES ARTHUR C. KLECKNER, OF RACINE, WISCONSIN, .ASSIGNOR T WEBSTER ELECTRIC COMPANY, OF RACINE, WISCONSIN, CORPORATION OF WISCONSIN. y

MAGNETO.

impulse mechanisminoperative is carried on the constantly rotating driving shaft, thus rendering the operation ofthe mechanism more certain than is the case when the centrifugal means is carried on the driven member, as has heretofore commonly been the practice. v

It is believed the invention will be understood most readily from a detailed description thereof taken in connection with the' accompanying drawings, in which Figurel is a sectional view through one end of the magneto vshaft andV parts adjay cent thereto; y

q Figure 2 isa sectionv substantially on the line 2 2 of Figure 1; Y Figure3 is a section substantially on the line 3-3 of Figure 1; A v Y.

Figure 4 is a view of the imp ulseniechanism looking at the device of Figure 4 from above'iand to the right; t Figure 5V is a view similar to F1gure 1 .through afmodifled form ofthe invention, and v Y line 6-'6of Figure `5'.V i u Referring now to the drawings, in kwhich like reference characters indicate the same parts inthe several views, `10 indicates thev end plate ofthe magneto which carries the ingI 11 is the driving shaft 12 upon whichl is fixed the gear 13 by means of which the shaft is continuously rotated when the device is in operation. 'f

` At '14 are shown portions of the rotor which are fixed to `the driven shafty 15. The shaft 12 is-hollow* throughout the greater portion of its length, and the reduced end 16 of shaft 15 projects into the bore of shaft 12. Fixed' tothe left end of the shaft 12, as seen in Figure 1, is the disc 17 v provided with' the substantially cylindrical flange 18. vFixedto to shaft 15 isfthe disc 19 having the'cylindrical ange 20. Positioned between vthe FigureV 6' is Vasectionv substantially on ythe flanges 18 and 20 is the spiral spring 21, one end of which is secured to flange 18, the other being secured to flange `20. Stamped out of the disc 19 is the laterally directed lug 22 which extends into the path of the lug 23 which is pressed out of the disc 17. "The lugs 22 and 23 are adapted to limit relative inovementrin one Vdirection of the discs 17 and 19, the spring 21 being normally under tension so as firmly to maintain said lugs 22 and`23 in engagement.

Pivotally mounted on the periphery of the ange 20, by means of the pivot 24, is the dog 25 provided with the upwardly extending flange 26. Piv-otally mounted on the vfixed pin 27 carried by the magneto frame is a pawll 28 which is normally pressed downwardly by means of the spring 29, downward movement of the pawl being limited by engagement with'the shoulder 30. f Y

A spring 31 is liXed to the. periphery of the flange 2 0 and normally tends to rotate the dog 2 5 in a clockwise direction,` as viewed in Figure 4.

VLoosely mounted about the shaft 12 is a spider 32 rwhich carries the annular disc 33. The free edge ofthe flange 18 is joined to the annular disc 33 by means of the links 34, one end of each link 34 vbeing pivoted ona -pin35 carried by lugs 36 struck out of the annular disc 33, the other end of each link 34 being pivotally supported on a pin 37 carried vin the lugs 38 struck out of the edge Aof the cylindrical Harige 18.`

Fixed to the links 34 are the centrifugal weights 40 which areadapted to move outwardly upon rapid rotation of the shaft 12 and force the annular disc 33 to the left, as viewed in 'Figures 1 and 4. A coil lcompression spring 41 is ,provided between the spider 32 and thedisc 17 which no-rmally tends Vto move the spider 32 and annular disc 33 to the right, asseen in Figureil. The annular i disc 33 is provided with a laterally extending lug 42. i

The'operation of the device lisas follows: The spring 31 will normally maintain the dog 25 in a position such that the upwardly extending lug 26 carried by the ydog will travel a path lto bring it into'engagement with the end of pawl 28,' Thiswill act momentarily to stop .therotation of the driven i shaft 15, but will permit the continued rotation of shaft 12. Further rotation of the shaft 12 will bring the lug 42 carried by the lll annular dise 33 into engagen'ient 'v vith the eam on the right side of dog 25, as seen in Figure al, moving the dog about its pivot Q-t and causing the lug 2G to become disengaged from the pawl -S. The spring 2l ivill thereupon operateV quickly to snap the rotor element of the magneto forwardly untiltho lug 22 engages the lug or linger This operation in the form ofthe device shown in Figures l to l ivill take plaf'e onee for efery revolution of .the shaft lf2.

lflien, hoivever, the shaft l?. is rotate-d rapidly the iveightsd() will move outwardly due to centrifugal "force, and will force the spider 32 and dise to the left against the tension of. vthe spring 4l. s the dise moves to the left, as viewed in Figure l, will engage the edge of the dog and will rotate the dog aboutits pivot thus moving the upnardly extend-ing portion Q6 out of the path of the pav-:l 28. The tension in the spring .Q1 will now maintain the. flug 22 firmly in engagement with `the linger 2S and the r-,riving and driven sha-fits .vill rotate together. IYhen, however, the speed of rota` tion :if shaft l2 sloivs doivn, the dise 33 will be moved to the right by the spring 4.1 and the magneto ivfill again act as an im pulsestarter. i`

The device shown in Figures and 6 is the same in operation as that shown in Figures l to #l'exeeptthe Centrifugal devices are rotatable about yaxes parallel to the shaft instead of about axes at'right angles to the shaft. In the form of devine shown in Figures 5 and 6, there is secured to the drivii ,I shaft l2 a dise 60 to vvhieh the Centrifugal levers rGl are. pivotally joined through the medium of pinsGQ'. Slidably, but non-rotatably, mount-ed on the shaft. l2 is a Collar having the outivardly extending flange G4. The flange G4 is provided with a Cain snr-fare G5 adapted to be engaged by cams (3G carried by the levers 6l, Aspring (S is provided between the dise 1T`ixed to the "iving shaft and the fiange 64, which norilly 'tends to keep flange 64 to the right, es reen in T` The operation of the deviee of Figures 5 and 5 is the same as that previously deable ,in the type of impulse starter just referred to is obviated.

While in the draivings and 1n the above description, applicant has limited his disclosure to certain definite details, it is to be understood that many modiiieations are rontemplated and the invention should, therefore, be limited merely by the scopey of the appended claims.

Having thus desrribed my invention, what I elaim as neu' and desire to secure by Lelters Patent of the United States is:

l. In a magneto, a driven member, a dri v ing member, resilient means joining said members, means pivotally mounted on said driven member for restraining the movement of said driven member, means carried by said driving` member for intermittently releasing said restrainingmeans, and centrifugal means carried by said driving meinber for rendering said rest-raining means inoperativeY whereby said members are driven Continuously together.

2. In a magneto, a driving shaft, a driven shaft, a spring joining said shafts whereby said shafts tend to rotate together, means for restraining the movement of said driven shaft, means carried by said driving shaft for intermittentlyv releasing said restraining means, and eentrifuga'lly operated .means carried by said driving shaft and movable axially thereof for rendering said restraining means inoperative whereby said shafts are driven Continuously together.

3. In af magneto, a driving shaft, a driven shaft, a spring joining said shafts whereby they. tend to rotate together', a fixed abutment, a dog carried by said driven shaft arranged to engage said abutment to momentarily prevent rotation of said driven shaft, means earied by said driving shaft for moving said dog out of engagement with said abutment, and meanscarried by said driving shaft for preventing engagement of said den` with said abutment ivhereby said shafts rotate substantially in unison.

4. In a magneto, a driving shaft?, a driven shaft, a spring joining said shafts whereby they tend to rotate together, a fixed abutment, a flange fixed to said driven shaft, a dog'pivotally joined 4to said flange and normallyarranged to engage said abutment,

a' dise rotatable with said driving shaft, means carried by said dise for disengaging said dog from said abutment, and eenti'if ugal means for moving said dise laterally whereby said dog is displaced so as to prevent engagement thereof with said abutment;

5. In a magneto, a driving shaft, a driven shaft, a spring joining said vshafts Whereby they tend to rotate together, a Cylindrical; flange fixed to said driven shaft, a dog pivotally supported onA the periphery of said flange, af fixed; abutment arranged to be engaged by said dog whereby the rotation of said driven shaft is momentarily prevented, a disc rotatable withsaid driving shaft, means carried by said disc for intermittently disengaging said dog from said abutment, and centrifugal-means carried by said driving shaft for moving said disc laterally whereby it engages said dog and maintains it out of engagement with said abutment to p ermit said shaftsto be rotated in unison.

' 6. In a magneto, a driven member, a driving member, resilient means joining said members, a stop, a dog carriedy by said driven member arranged to engage said stop,

means carried by said driving member for moving said dog` relative to said driven member fork disengaging thesame,v and centrifugal means carried by saiddriving member Vfor preventing engagement of said dog with 'mounted on. said driven member and adapted for engagement with said abutment, means carried by said driving member for intermittently releasing said dog, and separate ,centrifugal means carriedY by one of Ymembers, an abutment, a dog pivotally mounted on said driven member and adapted v for engagement with said abutment, means associated with said driving member for intermittently pivoting said dog out .of engagement with said abutment, andoentrit'- ugal'ly operated means carried by said ldriving member and movable axially thereof for Yholding said dog out of the path of said abutment.

9. In a magneto, a driven member, a drivy ing member, a spiral spring coiled axially of said members for connecting the same', means for restraining tlie movement of said driven member', means carried by said driving member for intermittently releasing said restraining means, and centrifugal means carried by said driving member for rendering said restraining means inoperative whereby said members are -driven continuously together. Y

In witness whereof, I hereunto subscribe my name this 19th day of February, 1924.

ARTHUR oKLEoKNER. 

